. ·14/4/10 ·SB ·Big Idea: Negative numbers help us model many real world situations. ·Essential Question: How can I add integers? ·Notes from Class: 1.In order to add integers you need to know which symbol to use. 2.The number with the bigger absolute value gets the symbol. Example: -9+10=1 because the absolute value of ten is bigger 3.Absolute value: A number’s distance away from zero. Problem 2.2 A.Use a chip board and black and red chips to find each sum. Draw a series of chip boards to illustrate your work. 1)-8+-7=-15 2)-8+7= -1 3)8+-7= 1 4)8+7= 15 B.Find two combinations of black and red chips that will simplify to represent the given integer. Draw series of chip boards to prove that each combination works 1)See illustration 2)See illustration C.Write each combination you found in part B as an addition sentence. 1). 7+-10 2). 15+-10 Problem 2.2 Follow up 1.4 gives the integer -4 2.-2+-3=-5 3.10+10=20 4.A.9+-7=2 B.-80+50=-30 C. 35+-27=8 D.-8+-5=-13
· 14/4/10
· SB
· Big Idea: Negative numbers help us model many real world situations.
· Essential Question: How can I add integers?
· Notes from Class:
1. In order to add integers you need to know which symbol to use.
2. The number with the bigger absolute value gets the symbol. Example: -9+10=1 because the absolute value of ten is bigger
3. Absolute value: A number’s distance away from zero.
Problem 2.2
A. Use a chip board and black and red chips to find each sum. Draw a series of chip boards to illustrate your work.
1) -8+-7=-15
2) -8+7= -1
3) 8+-7= 1
4) 8+7= 15
B. Find two combinations of black and red chips that will simplify to represent the given integer. Draw series of chip boards to prove that each combination works
1) See illustration
2) See illustration
C. Write each combination you found in part B as an addition sentence.
1). 7+-10
2). 15+-10
Problem 2.2 Follow up
1. 4 gives the integer -4
2. -2+-3=-5
3. 10+10=20
4. A.9+-7=2
B.-80+50=-30
C. 35+-27=8
D.-8+-5=-13